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TPS92520-Q1

AKTIV

1,6-A-Dual-Synchronous-Abwärts-LED-Treiber mit SPI

Produktdetails

Number of channels 2 Topology Buck Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125 Vin (min) (V) 4.5 Vin (max) (V) 65 Vout (min) (V) 0 Vout (max) (V) 61 Iout (max) (A) 1.6 Iq (typ) (mA) 5 Switching frequency (max) (kHz) 2200 Features Fault Detection, LED Open Detection, Precision Dimming Control, Thermal Error Flag, Thermal shutdown
Number of channels 2 Topology Buck Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125 Vin (min) (V) 4.5 Vin (max) (V) 65 Vout (min) (V) 0 Vout (max) (V) 61 Iout (max) (A) 1.6 Iq (typ) (mA) 5 Switching frequency (max) (kHz) 2200 Features Fault Detection, LED Open Detection, Precision Dimming Control, Thermal Error Flag, Thermal shutdown
HTSSOP (DAD) 32 89.1 mm² 11 x 8.1 HTSSOP (DAP) 32 89.1 mm² 11 x 8.1
  • AEC-Q100 qualified for automotive applications
    • Grade 1: –40°C to 125°C ambient operating temperature
    • Device HBM classification level H1C
    • Device CDM classification level C5
  • Functional Safety-Capable
  • 4.5-V to 65-V wide input voltage range
  • Up to 1.6-A continuous output current with 4% accuracy
  • Adaptive on-time average current control
  • Programmable switching frequency from 100-kHz to 2.2-MHz
  • Advanced dimming operation
    • 10-bit precision analog dimming
    • 10-bit precision internal PWM dimming
    • Supports external PWM dimming input
    • Optimized for external shunt dimming including LED Matrix Manager
  • Cycle-by-cycle switch overcurrent protection
  • Switch thermal protection
  • Serial peripheral interface (SPI)
    • Configurable analog reference, switching frequency, and PWM dimming duty cycle
    • Fault monitoring and reporting
  • Limp-home (LH) and stand-alone mode operation
  • AEC-Q100 qualified for automotive applications
    • Grade 1: –40°C to 125°C ambient operating temperature
    • Device HBM classification level H1C
    • Device CDM classification level C5
  • Functional Safety-Capable
  • 4.5-V to 65-V wide input voltage range
  • Up to 1.6-A continuous output current with 4% accuracy
  • Adaptive on-time average current control
  • Programmable switching frequency from 100-kHz to 2.2-MHz
  • Advanced dimming operation
    • 10-bit precision analog dimming
    • 10-bit precision internal PWM dimming
    • Supports external PWM dimming input
    • Optimized for external shunt dimming including LED Matrix Manager
  • Cycle-by-cycle switch overcurrent protection
  • Switch thermal protection
  • Serial peripheral interface (SPI)
    • Configurable analog reference, switching frequency, and PWM dimming duty cycle
    • Fault monitoring and reporting
  • Limp-home (LH) and stand-alone mode operation

The TPS92520-Q1 is a monolithic dual synchronous buck LED driver with a wide 4.5-V to 65-V operating input voltage range that can independently power two strings of series connected LEDs. The TPS92520-Q1 implements an adaptive on-time average current mode control and is designed to be compatible with shunt FET dimming techniques and LED matrix manager-based dynamic beam headlamps. The adaptive on-time control provides near constant switching frequency that can be set between 100-kHz and 2.2-MHz. Inductor current sensing and closed-loop feedback enables better than ±4% accuracy over wide input voltage, output voltage and ambient temperature range.

The high performance LED driver can independently modulate LED current using both analog or PWM dimming techniques. Linear analog dimming response with over 16:1 range is obtained by programming the 10-bit IADJ value via SPI. PWM dimming of LED current is achieved by directly modulating the corresponding UDIM input pin with the desired duty cycle or by enabling the internal PWM generator circuit. The PWM generator translates the 10-bit PWM register value to a corresponding duty cycle by comparing it to a programmable digital counter.

The TPS92520-Q1 incorporates advanced SPI programmable diagnostic and fault protection featuring: cycle-by-cycle switch current limit, bootstrap undervoltage, LED open, LED short, thermal warning and thermal shutdown. An on-board 10-bit ADC samples critical input parameters required for system health monitoring and diagnostics.

The TPS92520-Q1 is available in a 8.1-mm x 11-mm thermally-enhanced 32-pin HTSSOP package with a 2.75-mm x 3.45-mm top-exposed and bottom-exposed pad.

The TPS92520-Q1 is a monolithic dual synchronous buck LED driver with a wide 4.5-V to 65-V operating input voltage range that can independently power two strings of series connected LEDs. The TPS92520-Q1 implements an adaptive on-time average current mode control and is designed to be compatible with shunt FET dimming techniques and LED matrix manager-based dynamic beam headlamps. The adaptive on-time control provides near constant switching frequency that can be set between 100-kHz and 2.2-MHz. Inductor current sensing and closed-loop feedback enables better than ±4% accuracy over wide input voltage, output voltage and ambient temperature range.

The high performance LED driver can independently modulate LED current using both analog or PWM dimming techniques. Linear analog dimming response with over 16:1 range is obtained by programming the 10-bit IADJ value via SPI. PWM dimming of LED current is achieved by directly modulating the corresponding UDIM input pin with the desired duty cycle or by enabling the internal PWM generator circuit. The PWM generator translates the 10-bit PWM register value to a corresponding duty cycle by comparing it to a programmable digital counter.

The TPS92520-Q1 incorporates advanced SPI programmable diagnostic and fault protection featuring: cycle-by-cycle switch current limit, bootstrap undervoltage, LED open, LED short, thermal warning and thermal shutdown. An on-board 10-bit ADC samples critical input parameters required for system health monitoring and diagnostics.

The TPS92520-Q1 is available in a 8.1-mm x 11-mm thermally-enhanced 32-pin HTSSOP package with a 2.75-mm x 3.45-mm top-exposed and bottom-exposed pad.

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Technische Dokumentation

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Typ Titel Datum
* Data sheet TPS92520-Q1 4.5-V to 65-V Dual 1.6-A Synchronous Buck LED Driver with SPI Control datasheet (Rev. D) PDF | HTML 15 Feb 2020
User guide TPS92520EVM-133 Dual 1.6-A Synchronous Buck LED Driver Evaluation Module (Rev. A) PDF | HTML 23 Sep 2021
Application note Paralleling LED Driver Channels to Support Higher Currents Using TPS92520/519-Q1 PDF | HTML 10 Sep 2021
Application note Automotive Front Headlight Selection Guide PDF | HTML 16 Apr 2021
User guide LEDMCUEVM-132 MSP432™ LED Controller Evaluation Module PDF | HTML 06 Okt 2020
Application note TPS92520-Q1 Frame Definitions and Examples 05 Okt 2020
Functional safety information Streamlining Functional Safety Certification in Automotive and Industrial 09 Jun 2020
Technical article Designing a headlight ECU with a high-power-density constant-on-time DC/DC buck LE PDF | HTML 24 Okt 2019
Technical article How semiconductor technologies are changing automotive lighting roadmaps PDF | HTML 24 Okt 2019
EVM User's guide TPS92520-Q1 Launchpad Evaluation Module User's Guide (Rev. B) 22 Okt 2019
White paper An ECU Architecture for Adaptive Headlights 06 Aug 2019

Design und Entwicklung

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Bestellen & Qualität

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  • Materialinhalt
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  • Kontinuierliches Zuverlässigkeitsmonitoring
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